Attaching device



UNITED STATES PATENT OFFICE.

U. s. EXPANSION Bon'r 00., or

NEW YORK.

ATTACHING DEVICE.

Specification of Letters Patent.

Patented Aug. 2, 1921.

Application filed July 24, 1918. Serial No. 246,618.

To all whom it may concern:

Be it known that I, TRON O. PETERSON, a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Attaching Devices, of which the following is a specification. 7

This invention relates to a device attachable to a wall, ceiling, or the like, for the purpose of securing thereto an object, fixture, or other work; and the present device is of that class which associates with a threaded bolt, a swinging arm adapted to turn transversely of the bolt so as to maintain a bearing on the side of the wall opposite to that on which the work is held.

Considered broadly, my invention is concerned with certain novel and improved arrangements and constructions of parts conducing to simplicity and economy in construction, as well as certainty in operation. Specifically considered, the present device is designed for use where the turning space for the pivoted arm is no greater, possibly even less, than the length of the arm itself, or where the space available for the arm is entirely, or mostly, to one side of the axis of the'bolt with which the arm is associated. A further object is to so construct the device that after installation it may, if desired, be withdrawn with comparative ease and without loss or 1n ury to and facility, its parts. Other objects as well will also appear hereinafter from the detailed de scription to follow, wherein reference is made to certain preferred embodiments of my invention illustrated in the accompanying drawing, in which- Figures 1, 2, and 3 are longitudinal sections through one form of the device as it appears during three stages of its installation; I

Fig. 4 is a detail in perspective of the nut on which the arm is pivoted;

Fig. 5 is a detail in perspective of the arm detached from the nut;

Fig. 6 is a longitudinal section showing a modified construction of arm; and

Fig. 7 is a perspective view thereof.

In illustrating the present attaching de vice I have represented also certain parts which would appear adj acent'thereto when in service, and accordingly'there is shown in section a wall 10 through which an aperture 11 is provided to receive a threaded bolt 12 whose head 13 is adapted to engage the work 14 to hold the same in place against the front face of the wall. It will be understood, of course, that the precise nature or character of the wall, ceiling, or floor in which the present device is used is of no material consequence-it may be a solid wall as shown, ora hollow wall with space inside 13118561) suificlent to permit the pivoted arm 0 urn.

Upon the bolt is threaded a nut 15 equipped with a pair of oppositely disposed trunnlons 16, the nut being preferably of eccentric shape as shown in Fig. 4:, so as to provide on one side between the trunnions a protuberance 17 When the parts are assembled, these trunnions lie within openings 18, one formed in each side wall 19 ofa pivoted arm 20 which may be conveniently formed of sheet metal and preferably of arched cross sectional shape as to possess a desirable degree of strength. As best appears in Fig. 5, the web portion 21 of the arm situated between the sides 19 is cut away near the pivoted end and bulged out to form a lip 22, the purpose of which will 7 presently appear.

It is manifest that with the parts so constructed the arm may pivotally swing upon the nut, with the trunnions as an axis, and may either point ahead of the bolt, as shown in Fig. 1, in which position the lip 22 engages with the protuberancel? upon the nut, or may swing around to lie in a position transversely of the bolt. In this latter position, the bolt may be advanced relative to the nut, so that the lip 22 will lie against the bolt to prevent return movement of the arm to the position of Fig. 1. When the de vice is assembled, it may be found desirable to jam, mutilate, upset, or otherwise treat the end of the bolt so as to prevent thenut from working off. Preferably this end 23 is rounded or tapered to present a beveled or oblique surface adjacent the lip 22 to prevent binding of the parts when the bolt ,is threaded through the nut'suiliciently to bring its end 23 beyond the lip.

In use the bolt is first passed through the work after which the device is inserted through the aperture prepared for its reception; This insertion is preferably accomplished by having the arm swung around so that it points ahead of the bolt and in substantial alinement therewith (see Fig. 1). \Vhen the bolt has been inserted for nearly its entire length the arm will be clear of the aperture so as to drop by gravity lnto trans- 5 verse position, as shown in Fig. 2. It will be noted that the arm can drop to one side only of the nut owing to the presence ofthe protuberance 17 which engages the lip 22, it the arm starts to swing backwardlypast center. This is important, as in ceiling installations, for instance, there'would other wise be no certainty as to which way the arm would fall. Having reached the transverse position shown in Fig. 2, the bolt is then tightened until its head 13 engages the work on one side and the arm 20 engages the wall on the rear side (see Fig. 3). When the parts are so'related, the lip 22 lies against the bolt in such manner as to prevent the arm from swinging back out of transverse position, and because of this circumstance the device remains securely attached in lace.

It will be observed also that the maintenance of the arm in transverse position depends upon the continued engagement of the lip 22 withthe shank of the bolt. This feature-of operation I turn to advantage when, for any reason or other, it is desired to remove the work. On such occasion the bolt is loosened sufficiently to withdraw its end from engaging relation with the lip so 7 that'the arm is thereupon free to swing around into-alinement with the bolt. By so manipulating the bolt until the arm can swing into this position the entire device may be withdrawn from the wall.

It willbe apparent that the present device may be modified or changed in many particulars without departing essentially from theconstruction or mode of operation already described, and without losing any of the advantages claimed for this invention.

One such modification is suggested in Figs.

"6 and 7, and as this is typical of many others that might be devised, I desire to explain its construction. The bolt shown in Fig. 6, designated as 12, is in all respects similar to the one shown in the remaining figures, and

5b the nut 15 threaded thereon is likewise similar to the one which has already been described. Pivotally mounted upon the trunnions of this nut is an arm 24 formed of at strip bent near its middle as at 25 to provide two sides 26 27 the arm being thereby U- shaped in longitudinal section. Suitable openingsare provided in which the'trunnions 16 may lie so as to provide a pivotal mounting for the arm upon the nut. A pin 28extending' between the two sides 26 and 27 in position to engage with the shank of the bolt acts to hold the arm in transverse position, as shown in Figs. 6 and7,'and by this means the device maintains a firm bear- GB ing against the rear side of the wall.

turned; and the maintenance of the arm in transverse relation to the bolt is assured by the manner of its engagement with the bolt, not requiring a spread of the arm to points on opposite sides. of the aperture. anifestly also the device is exceedingly simple, it may be produced at small cost, and'its installation is readily accomplished.

I claim:

1. In a device of the kind described, the combination with a bolt of a nut threaded on the bolt, an arm pivoted to the nut capable of swinging in advance of the bolt into substantial alinement therewith, the arm being formed to engage the bolt when the arm is swung transversely thereof, and the nut being formed with means to engage the arm when the latter is alined with the bolt, substantially as described.

2. In a device ofthe kind described, the combination with a bolt of a nut threaded thereon, and an arm pivotedtothe nut, the arm being adapted to swing in advance'ot the bolt when the nut is near the end thereof, the arm and nut being adapted to interengage when the arm has swung in advance of the bolt into substantial alinement therewith, substantially as described.

3. In a device of the kind described; the combination with a bolt of a nut threaded thereon, and an arm pivoted to the nut, the arm being adapted to swing in advance of the bolt when the nut is near the end thereof, the arm and nut being adapted to engage when the arm has swung in advance of the bolt into substantial alinement therewith, and the arm being arranged for engagement with the bolt when transverse thereto'when the nut is threaded sufiiciently upon the bolt, substantially as described. 7 V

4. In a device of the kind describedfthe' combinationwith a bolt of a nut threaded thereon, and an arm pivoted at one end. to

bolt, the arm and bolt being formed to en- 1 0 gage with each other when in transverse relation to prevent swinging of the arm upon the bolt-in one direction, and the bolt end adjacent the arm as well as the arm end adjacent the bolt being formed to present obliquely facing surfaces whereby the bolt end may be moved longitudinally past the arm end, substantially as described.

6. In a device of the kind described, the combination with a bolt of a nut threaded thereon, and an arm pivoted to the nut, the arm being capable of swinging from a transverse position at one side of the bolt to a position ahead of the bolt and in substantial alinement therewith, the arm and nut being arranged for interengagernent when the arm is alined with the bolt whereby the arm is prevented from swinging into a position on the opposite side of the bolt, substantially as described.

7. In a device of the kind described, the combination with a bolt of a nut threaded thereon, the nut being formed with oppositely disposed trunnions, and an arm pivoted at one end to the nut, the arm being formed of a web portion and two sides extending therefrom in parallel relation, the end of the web adjacent the nut being cut away and flared outwardly to provide an oblique surface, the end of the bolt adjacent the arm being likewise obliquely formed to facilitate movement past the arm when the bolt is advanced through the nut, substantially as described.

8. In a device of the kind described, the combination with a bolt of a nut threaded thereon, and an arm swingingly associated with the nut, the nut being formed with a protuberance extending to one side thereof, and the arm being formed to engage with the protuberance when swung into a position in advance of the bolt and in substantial alinement therewith whereby the arm is prevented from swinging past such position, substantially as described.

TRON O. PETERSON.

Witness:

R. RODENBURG. 

